What Are Battens On A Roof?
What Are Battens On A Roof?
A typical professional word for an Above Sheathing Ventilation (ASV) roofing system is “battens,” which is also known as “strapping” or “strips.” Roofing materials are affixed to a 2’x2′ wood batten grid, resulting in a 12″ continuous airspace.
This airspace allows adequate ventilation to remove interior moisture and reduce ice damming, thereby reducing the damaging effects of ice dams and keeping your home warmer in winter.
Where Are Battens Installed On A Roof?
Install the battens at the eaves first, then work your way up the roof plane to establish a barrier between the truss rafters.
Nail the strips in place with three nails per batten. Do not move on until each strip is completely installed and your contractor has ensured the roof is secure.
Why Roof Are Battens Different Colors?
The original idea behind incorporating a dye into the preservative treatment of battens was to distinguish “graded” battens from “ungraded” ones (which usually appear a bit green in color due to the type of preservative used).
For that reason, the coloring process was initially very successful – with Gold Batten instantly recognized as a high-quality BS 5534 graded batten. But, as they say, “Imitation is the sincerest form of flattery,” or, in this instance, a strategy to grow market share.
What Wood Is Used For Roof Battens?
The sort of wood chosen for a roofing batten is important. The tree species from which the wood came should be marked on the batten. We only utilize slow-grown imported redwood or whitewood from Marley for our JB Red Battens, and the two species are quite similar.
They’ve been noted for their durability and high quality. For the White Batten, we use a more domestically grown, fast-growing species of hardwood called American Maple.
How Many Battens Should Be On A Roof?
They should be at least 1.2m long and span at least three rafters. For more than 200mm gauges, no more than one in every four battens should be linked across one truss.
There can be a maximum of three consecutive joins in any twelve courses of battens with gauges smaller than 200mm, and four (or a maximum of five) consecutive joins for gauges larger than 200mm, provided that the batten is nailed.
Are Battens On A Metal Roof Recommended?
Battens are generally a suitable choice for metal roofs and are frequently recommended when roof-overs are required.
They are more cost-effective than mesh panels and can provide same-level protection and ventilation. They also help prevent ice dams, which cause frost damage and leaks from condensation.
How Do You Calculate Roof Battens?
Multiply the number of rows in each portion of the roof by the length of that section’s eaves. This will tell you the total length of battens required for each roof side, including the eave.
Divide the total length of battens by 200mm to find how many courses of smaller-gauge (200mm and under) battens will be required.
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Do You Need Battens For the Slate Roof?
Slates should always be stacked two high. Concrete slates require 38x25mm batten for 450mm joist spans and 50x25mm batten for 600mm joist spans.
Timber battens measuring 38x25mm for spans up to 450mm and 50x25mm for spans up to 600mm will be required for timber shingles and shakes.
